Shoe-upper edge-treating machine



Aug. 9, 1938'. F. E. SHERMAN SHOE UPPER EDGE TREATING MACHINE 2 Sheets-Sheet 1 Filed July 20, 1936 Qlvn Aug. 9, 1938. F, SHERMAN 2,125,960

SHOE UPPER EDGE TREATING MACHINE 1g Ava 717R:

Hfaiwm%w Patented Aug. 9, 1938 PATENT OFFICE 2,125,960 SHOE-UPPER EDGE-TREATING MACHINE Fred E. Sherman, Beverly, Mass., assignor to United Shoe Machinery Corporation, Paterson, N. J.-, a corporation of New Jersey Application July 20, 1936, Serial No. 91,454

9 Claims.

to render the edge of the lining lessconspicuous.

It has long been realized that the exposed edge of the lining of a shoe upper is unduly conspicuous around the exposed edge of the upper, as at the'foot opening. Usually the edge of the a raw edge, no attempt being made to finish this edge before the shoe upper is assembled. Frequently, too, it is of a color contrasting with that of the shoe upper. This renders this edge of the lining unduly conspicuous. It is desired, furthermore, thatthe edge of the upper at the foot opening in particular should fit the foot as closely as possible and, to this end, efiorts have been made to impart a curvature to the margin of the upper to cause the folded or bound edge of the upper to bend inwardly toward the foot, thereby, at the same time, tending to hide the edge of the lining. H

An object of this invention is to provide an improved machine for treatingthe edges of assembled shoe uppers to improve their appearance and to hide the edged the lining. To this end and in accordance with a feature of the invention, the illustrated machine is arranged to feed the assembled upper and to act progressively on the lining adjacent. to its edge to thin it, as by hammering. As illustrated, the machine is provided with a slab-sided or a polygonal disk which may rotate in a direction opposite to the direction of movement of the upper and which bears on the margin of the lining to hammer it.

Still another feature of the invention resides in the provision of means for imparting a shape to the. edge of the upper so that the upper mate-' rial will bend toward the foot of the wearer and thereby avoid any space between the shoe and the foot. This bending of the upper inwardly tends also to hide the edge of the lining and the two operations in the illustrated machine of thinning the edge of the lining and shaping the margin of the upper are carried on concurrently.

These and other features of the invention will be best understood from a consideration of the following description, taken in connection with the accompanying drawings, in which,

Fig. 1 is a side elevation of the machine;

Fig. 2 is a plan view thereof;

Fig. 3 is an end elevation showing a portion of one of the feed rolls broken away;

Fig. 4 is a. fragmentary view on an enlarged lining, especially whenit is made of leather, has

scale partly in section and partly in side elevation. of the treating rolls and a piece of work being treated thereby;

Fig. 5 is a vertical section, enlarged still more, taken along the outer end of the hammering disk, and

Fig. 61is a detail section on the line VI-VI of Fig. 1.

- The machine comprises a base In having uprightflanges l2 which provide supports for the bearings 84 and 16 of a main shaft l8, this shaft being provided with a driving pulley 20. shaft is carried a work-supporting feed-roll 22 adapted for engagement with the outer surface of an assembled shoe upper 24. This upper, as is shown much enlarged in Fig. 4, may comprise part of a completed shoe or may be a so-called loose upper which has been assembled and stitched but not yet lasted. It will comprise the upper material 26, theexposed edge of which is located in the machine by an overhanging edge gage 28 and this edge may be either a folded edge or one which has been finished with French binding or the like. Within the upper and attached to it adjacent to the upper edge by stitching is a lining 30, usually of leather, and the edge of which is usually a raw edge. It will be noted that the gage 28 is adjustably held in position by a screw 32 and that it overhangs the flanged edge 36 of the roll 22, being closely adjacent thereto. The roll 22 has a concave contour in radial section and tends to shape the margin of the upper material 26 by bending the exposed edge thereof inwardly toward the space which will be occupied by the wearers foot when the shoe is in use and to overhang the edge of the lining 30. The upper is held against this supporting roll 22 and in the concavity thereof by the combined action of a feed roll 4|] of disklike formation which is supported at the end-of a shaft journaled in an elongated bearing member 44 which is forked at 46 (Fig. 2) and pivotally mounted on side flanges 4B of the frame by means of pointed pivot screws 50. This shaft is driven from the main shaft [8 by coacting, loosely meshing gears 52 and 54 so that the rolls 22 and 40 rotate in opposite directions and coact to feed the work in a direction parallel to the edge of the upper. The forward end of the member 44 is held against lateral deflection by guide members 56supported on the flange I2. To hold this upper feed roll 40 in engagement with the work, the machine is provided with a tension spring 60 extending between a stud 62 On this.

on the frame and another stud 64 screwed into the side of the bearing member 44.

Treatment of the edge of the lining to thin it and render it less conspicuous is eflfected by means of a thin hammering-disk 10, shown in Figs. 3 and 5 as slab-sided and preferably of hexagonal contour with slightly rounded corners. This disk is mounted on the end of a shaft 12 journaled in a bearing block 14 which has upwardly extending arms 16 to receive pivot screws 18 by means of which the block is supported on the bearing member 44. Connected to this shaft 12 to drive it is a flexible shaft 80 which may be rotated by any suitable source of'power (not shown) such as an electric motor. In order that the position of the shaft 12 axially of the bearing block 14 may be readily adjusted, the bearing is provided with a slot 82 receiving a collar 84 closely fitting said slot and held to the shaft 12 by a set screw 86. A similar arrangement is provided for the adjustment of the axial position of the shaft 48 in its bearing 44, this comprising a collar 88 received in a slot 90 and held on the shaft by a set screw 92. The hammering disk 10 is held in engagement with the work by means of a spring 94 extending between a screw stud 96. on the frame and a screw stud 98 threaded in the side of the bearing block 14.

When it is desired to separate the rolls to remove a piece of work which has been treated or to insert another piece, the treating tools 40 and"), are lifted by means of a treadle (not shown) having a treadle rod I00 connected through a lever I02 and a link Hi4 with a screw 1 I06 threaded in the lower bearing block 14. This bearing block underlies the block 44 (Fig. 6) and is similarly guided between the frame members 56 so that upward pressure on the lower block 14 also lifts the upper block 44 and raises the 1 two treating tools 40 and TI] together.

In the operation of the machine, the exposed margin of the upper is positioned on the supporting roll 22 with its lining upward and pushed against the edge gage 28 thereby bringing. the

. margin of the lining directly under thehammer ing disk 10. As soon as power is supplied to the machine to drive the various rolls,'the upper will be fed in a direction generally parallel to the exposed edge thereof and treatment of the edge of the lining will be continuous to thin it, as

thinning the exposed edge of the lining.

2. In a machine for treating assembled shoe uppers including a lining, coacting feed rolls for engagement with a piece of work along the margin of the foot opening, and means for progressively hammering the exposed edge of the lining to reduce its thickness.

3. In a machine for treating assembled shoe uppers including a lining, coacting feed rolls for engagement with a piece of work along the margin of the foot opening, and a. rotary hammer acting on the exposed edge of the lining to drive itagainst the adjacent upper material.

4. In a machine for treating the exposed margins of assembled shoe uppers including a lining, a supporting roll for engagement with the grain surface of the upper, a narrow treating roll arranged to act on the raw edge of the lining, and a feed roll pressing against the lining, said roll being positioned beside the treating roll and adapted to coact with the supporting roll to grip and feed the upper.

5. In a machine for treating the margins of assembled shoe uppers including a lining, a shaping roll. for engagement with the outer surface of the upper to curve the edge thereof inwardly, and two rolls for gripping the upper against the shaping roll, one of said rolls being positioned to engage the exposed edge of the lining.

6. In a machine for treating the exposed edges of assembled shoe uppers including a lining, a roll for changing the cross-sectional configuration of a portion of the upper, and coacting means pressing the upper against said roll and positioned to treat the edge of the lining.

7. In a machine for, treating the edges of assembled shoe uppers including a lining, a roll having a curved radial cross section, a coacting roll for engagement with the other surface of the shoe upper and adapted to press the margin of the upper into the concave curvature of the first-named roll, and means positioned alongside one ofsaid rolls for thinning. the edge of the lining.

8. In a machine for treating the exposed edges of assembled shoe uppers including a lining, a roll having a concave radial cross section, a driven disk pressing the margin of the upper into the concavity of said first-named roll, and another disk positioned alongside the first disk for hammering the edge of the lining to thin it.

9. In a machine for treating the exposed edges of assembled shoe uppers including a lining, co-

FRED E. SHERMAN 

